The simplest way to build an application is to compile all of your Visual Fortran source files (.FOR) and then link the resulting object files (.OBJ) into a single executable file (.EXE). You can build single-file executables either with the visual development environment or by using the DF (or FL32) command from the console command line.
The executable file you build with this method contains all of the code needed to execute the program, including the run-time library. Because the program resides in a single file, it is easy to copy or install. However, the project contains all of the source and object files for the routines that you used to build the application. If you need to use some of these routines in other projects, you must link all of them again.